Suppose 8 quarters, 5 dimes, 7 nickels, and 8 pennies are in a box. One coin is selected at random. What is the expected value of the money drawn from the box?

Q: Suppose 40% of the chocolate bars are $100, 10% are worth $200, 30% are wortg $50, and 20% are worth…

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Q: 6. If the expected value of the weight of a randomly selected person in an office building is 175,…

A: Solution: 6. Let X be the weight. From the given information, E(X)=175 and n=5.

Q: Suppose that you sampled 2 CEOs with replacement instead. How many different samples are possible,…

A: Sampling is a process which is used in statistical analysis. In sampling a predetermined number of…

Q: A 5-card hand is dealt from a perfectly shuffled deck so that each 5-card hand is equally likely.…

A: Let X denote the expected number of hearts in 5 card hand. Form probability distribution for the…

Q: What is the probability that a randomly selected beanbag chair is made from suede and is filled with…

A: The data is as follows   Foam Beads Total Velevet 4 4 8 Suede 5 3 8 Total 9 7 16

Q: (a) What is the probability that an error occurs in exactly 4 of the trials? (b) What is the…

A: Since you have posted a question with multiple sub-parts, we will answer the first three questions…

Q: A box contains 12 lightbulbs of which 5 are known to be broken. You reach in and remove three…

A: We have to find given probability.

Q: A bag of 22 candy bars contains 9 kitkats. 4 bars are selected at random. What is the probability…

A: In question, Given that a bag of 22 candy bars contains 9 kitkats, 4 bara randomly selected. Then…

Q: What is the probability of randomly selecting a 3-children family with two girls?

A: We will first list all possible outcomes in the sample space, then we will use following definition…

Q: Suppose that a player draws a card at random from a pack of cards, and wins $15 if an ace, king,…

A: Probability quantifies the chances of happening an event. The probability values always lie in the…

Q: What is the probability of randomly selecting a cat?

A: here given Table    Cat Dog Total student 11 29 40 professor  20 17 37   31 46 77 use…

Q: If an urn has 5 white balls and 10 red balls, what is the probability that 5 randomly selected balls…

A: Given that there are 5 white balls and 10 red balls. Total number of balls is 5+10=15. And 5 balls…

Q: You have 4 quarters and 2 dimes in your pocket. You draw two out at random. What is the expected…

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Q: What is the probability that a randomly selected bow tie is made of silk or is not shaped like a…

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Q: What is the probability of selecting one person at random who is a smoker?

A: From the provided information, Total person = 100 Number of persons who smoke = 54

Q: If an urn has 10 white balls and 5 red balls, what is the probability that 4 randomly selected balls…

A: Hypergeometric distribution is given by

Q: In a family with 2 children, excluding multiple births and assuming that a boy is as likely as a…

A: Let B=Boy and G=Girl Possible number of outcomes for two children are {BB, BG, GB, GG} Let x= number…

Q: What is the probability of selecting a red marble, returning it to the bag, and then selecting a…

A: As per our guidelines we can answer only 3 subpart questions. Please repost the question again.

Q: If 10% of men are bald, what is the probability that fewer than 100 in a random sample of 900 are…

A: Solution:Binomial distribution approximated to normal distribution or not is checked below:It is…

Q: When one is randomly sampling four items from a population, what is the probability that all four…

A: (a). Compute the probability that all four elements will come from the top quartile of the…

Q: Find the expected number of girls in a family of 3 children.

A: Let X : Number of girls in a family of three children. We have to find the expected value i.e. EX…

Q: You have 3 quarters and 4 dimes in your pocket. You draw two out at random. What is the expected…

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Q: We subtract a random sample of five numbers, without backtracking, from the set {1, 2, 3,. . . ,…

A: A random sample of 5 numbers is to be selected from the set of numbers {1, 2, 3, - - - - - ,20}

Q: When two unbiased dice are thrown, find the expected value of the product of the numbers shown on…

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Q: 2-A card is drawn at random from a deck consisting of cards numbered 2 through 10. A player wins 1…

A: Probability of an event is computed by taking the ratio of number of favourable outcomes to total…

Q: You have 3 quarters and 2 dimes in your pocket. You draw two out at random. What is the expected…

A: 1 quarter = 25 cent 1 dime= 10 cent Three cases can happen.  we can get 1) 2 quarters, 2) 1 quarter,…

Q: An urn contains 10 red balls, 20 yellow balls, and 40 orange balls.  If you reach into the urn and…

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Q: A nylon connector manufacturing plant yields 15 % defective items. If 1000 connectors are randomly…

A: Here, n = 1000, p = 0.15.

Q: If A and B are events in the same sample space, then how will you get the probability of A or B…

A: If A and B are events in the same sample space, the probability of A or B occurring is…

Q: Approximately 10% of all people are left-handed.  If you select a group of 27 people, what is the…

A: Given: Sample size (n) = 27 p (left-handed) = 10% = 0.10 Let "X" be the people who are left handed.

Q: What is the probability of drawing either an ace or a heart in a single draw from a deck of 52…

A: The number cards in a standard deck of cards is 52.

Q: what is the expected number of participants who arrived from 8 to 10 am?

A: Here Given  Arrival Rate= 5 per hour  No of team member in each team is Independent and takes value…

Q: If a fair coin is tossed 8 times, what is the probability of tossing a head on the 8th toss, given…

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Q: What is the probability of rolling a 3 on a six-sided die and a two-sided coin landing on heads?

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Q: A church is holding a raffle and sells 500 tickets for $2 each. If the church awards one $100 first…

A: There is one $100 prize  So the probability of winning $100 is = 1/500    there are two $50 prize So…

Q: What is the probability that a randomly selected bottle is correctly placed AND is a Plastic #4…

A: Probability is defined as the ratio of possible outcomes in a particular event to the total number…

Q: A box contains 5 red and 4 green marbles. If 6 marbles are drawn without replacement, what is the…

A: We have given that Number of success (k) = 5 Population size (N) = 5+4 = 9 Sample size (n)  = 6

Q: A nylon connector manufacturing plant yields 14 % defective items. If 1000 connectors are randomly…

A: It is given that p = 0.14 and n =1,000.

Q: Find the expected value for a person that buys one ticket

A: Expected value = number of required/ number of total

Q: What is the expected number of getting the sum of 3 dice rolls with 7 sides is an odd number?

A: The Expected value of getting the sum odd number for one dice is given by:…

Q: (11) A three-person jury is to be selected, at random, from a pool that has 6 people with green eyes…

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Q: A church is holding a raffle and sells 500 tickets for $2 each. If the church awards one $100 first…

A: Note:Hey there! Thank you for posting the question. Your question says “what is the expected value…

Q: ou roll three 5-sided dice simultaneously(each with an equal probability of landing on each number 1…

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Q: A $20 bill, two $10 bills, three $5 bills and four $1 bills are placed in a bag. If a bill is chosen…

A: From the provided information, The total bills = 1 + 2 + 3 + 4 = 10 The probability distribution…

Q: a) what is the probability that you need to approach exactly 6 people to find 3 left-handed…

A: Let p be the probability of being left handed. Given that p = 0.12 Let X denote the number of…

Q: a) What is the probability that the individual successfully rolled a 7 in less than 7 rolls? b) If…

A: Here given 2 dice are rolled  So Total number of outcomes = 6×6 = 36

Q: There are 20 envelopes on a table and you get to pick one at random. In one of the envelopes there…

A: The number of envelops is 20.